Common use of Isolation Transformer Clause in Contracts

Isolation Transformer. The isolation transformer is an oil-filled type and is located in an outdoor weather-protected enclosure. It provides electrical isolation and impedance for system protection against notching and harmonic distortion. The transformer is designed for service with a three phase, twelve pulse power converter connected to the secondary winding. One transformer is provided for each two gas turbine- generators. Transformer rating as follows: -- 5500 KVA, 4160V pri-4160 / dual 480VAC sec -- 1250 KVA exciter winding- 515v, 3 phase, 60 hz -- Impedance 6% -- Ambient 30DEG.C average, 50DEG.C maximum -- Altitude 3300 ft above sea level -- Delta connected primary, BIL 95 KV -- Wye connected secondary -- Delta connected exciter winding -- BIL 60 KV -- Continuous voltage to ground